Random samples or the entire workforce in nine offices in which similar clerical work was being performed were studied using a doctor administered questionnaire that inquired into symptoms that have been linked with the "sick building syndrome." Five of the offices were fully air conditioned, one had recirculation of air and mechanical ventilation, and three were naturally ventilated. Workers i...

Disease prevalence is ideally estimated using a 'gold standard' to ascertain true disease status on all subjects in a population of interest. In practice, however, the gold standard may be too costly or invasive to be applied to all subjects, in which case a two-phase design is often employed. Phase 1 data consisting of inexpensive and non-invasive screening tests on all study subjects are used...

objective herpes simplex virus (hsv), one of the most common sexually transmitted disease is a worldwide .this study aimed to prevalence of herpes simplex virus of pregnancy in iran. methods: we searched pubmed, scopus, ovid, science direct and national databases were searched: magiran, iranmedex and science information database (sid) up to october 2015.eventually, we included five studies that...

context this systematic review and meta-analysis was performed to determine the prevalence (by overall relative frequency) and clinical information of the behcet’s disease in middle east and north africa (mena) and it has an important effect on the health policy and performing complementary studies in future. evidence acquisition we performed this systematic literature review from several datab...

context aboriginal and torres strait islanders (aboriginal) account for approximately 3% of the australian population. they have the poorest health, economic and social outcomes. higher notification rates of hepatitis c antibodies (anti-hcv) have been reported among aboriginal compared with non-aboriginal people. the identification of aboriginal people in national surveillance has some weakness...

objectives: tooth loss appears to have an important role in the loss of mastication and esthetics. the aim of this systematic review was to investigate the prevalence of tooth loss and edentulism in the iranian population. methods: studies reviewed in this article were primarily identified via search of the online bibliographic databases including pubmed and iranian biomedical journals, by usin...

background: streptococcus pneumoniae is a major cause of childhood morbidity and mortality worldwide . several studies have explored the nasopharyngeal carriage of s. pneumonia in iran. this meta-analysis is aimed at exploring the overall prevalence of nasopharyngeal carriage of s. pneumoniae among healthy children and its resistance to antibiotics. method : we have systematically reviewed publ...

Background and aims: Infertility is one of the most important conditions in reproductive system and there is no reliable estimates for global prevalence of infertility. Therefore, knowing the prevalence of infertility is important and can be effective in decision making. Methods: We systematically reviewed all published papers in Medline database and Scopus (1988–2010). Univariate and multivar...